Apparatus for administering anesthetics



Qu 21. 192k R. E. T. RHAMEs APPARATUS FOR ADMINSTERING ANSTHETICS FiledMarch 22. 192s Patented Qct. 2l, 1924iu RUDOLPH E. T. RHAMES, OF BOSTON,MASSACHUSETTS.

APPARATUS FOR ADMINISTERTNG ANESTHETICS.

Application filed March 22, 1923.

all whom 'it may Concern.'

Be it known that I, RUDOLPH E. T. RHAMES, a subject of King George V, ofGreat Britain, residing at Boston, in the 5 county of Suffolk and Stateof Massachu'set-ts, have invented new and useful linprovements inApparatus for Administer ing Anaesthetics, of which the following is aspecilicaton.

This invention relatesto an improved apparatus for administeringanaesthetics and has tor its object to provide a simple, etlicientapparatus through the medium of which liquid anaesthetics such as vetherand istered by physicians to patients.

Another object of the invention is to provide an apparatus in which aliquid anaesthetic may be ted, either by gravity oriinder pressure, froma container in which it is stored to a hood secured beneath. saidcontainer, said hood resting upon the taceqot the patient, the anstheticbeing supplied either in drops or in a spray to an absorb ent materialfrom which the fumes are inhaled by the patient. I

Another object oi the invention is to provide a means for indicating therate ot teed of the liquid anaesthetic from the container to the hood.

Still another object ot the invention is to provide an apparatus whichmay be u tilized in administering gaseous ansthetics and oxygen gaswhich are not stored in the container oit the apparatus, but are storedin separate containers and are delivered to the hood of the apparatus otthis invention by any suitable conducting means which may be connectedto the hood.

The invention consists in the combinae tion and arrangement ot parts set'terth in the following specification and particularly pointed out inthe claims thereof.

Referring to the drawings:

Figure 1 represents a central vertical section through an apparatusembodying the invention. Y

Fig. 2 is a plan view of the upper portion of the apparatus.

Fig. 3 is a detail section taken on the line 3-3 of Fig. 2.V

Fig. l is a detail elevation illustrating the mechanism that permits thehood to be adjusted relatively to the base.

chloroform may be vaporized and adinin- Serial No. 626,941.

Like numerals refer to like parts throughout the several views ot thedrawings.

ln the drawings, 5 represents a container tor a liquid aneesthetic, asfor example, ether or chloroform, said container coinprisiug a base 6, atransparent cylindrical member 7 mounted upon said base and a cap 8 inwhich a filling opening 9 is provided through which the anaesthetic issupplied to the interior of the container. The filling opening 9 isprovided with a suitable cover 10. Formed integral with the base 6 andalso concentrically disposed relatively thereto is a pressure cylinder1l from the upper end ot which project-s a tubular extension 12 which isscrew-threaded at its upper end to receive a nut 13, the latter beingprovided to clamp the base tl, transparent member 7 and cap 8 tightlytogether. A gasket 14 is interposed between the base 6 and the loweredge ot the transparent member 7, while another gasket 15 is similarlyinterposed between the cap nd upper edge of said transparent mem-Located within the pressure cylinder 11 is a piston 16 provided with atubular pia ton rod 1T which extends upwardly through the tubularextension 12 and said piston rod has a handle 18 fastened at the upperend thereof through themedium of which a reciprocatory motion may beimparted to said piston. The piston 16 is prevented from rotating withinthe cylinder 11 by a pin 19 which projects from the upper portion of thecylinder 11 into a groove 2O provided in the tubular piston rod 17.Ports 21 are provided in the side wall of the pressure cylinder 11 andform a means whereby the liquid anaesthetic may pass Ytrom the interiorof the container V5 to the interior ot' the pressure cylinder 11. Smallbleed openings 22 are also provided extending through the upper end otthe pressure cylinder and said openings also connect the in terior ofthe container 5 with the interior of the pressure cylinder 11.

Located at the lower end of the pressure cylinder 11 and constituting apart thereof is a detachable end member .23 in which a discharge port 2ais provided together with other ports 25 which connect the interior ofthe pressure cylinder with said dis@ Y minute.

:formed hifi-he .nozzle 35.

38 ie a hood 39 Whie 1 v lattere nose. and mouth charge port 24. Thedisoharge port 24k has a. needle valve 26 provided therefor ing a valverod 2? which has sereni-threaded engagement at QS withV the niemher S3of the handle 187 and indicates the ei. towhich the valve has he iraised from the discharge port Q4, the rate loit feed of the hq laneestlietio through said discharge por` in drops per with The sierenvwhread preerahli douhle thread in order lui of the valve rod 27 will enclose the dieeharge port 24T.

the same in its normal position. trated in Fig. 1.

With a pluralitji7 of smell formed'thoreiu through which t either chipor he forced in :i Q1raf llilhen in position, as illuat the nozzle 2:.1;ehuts anainsi" the C3 x of the ineniher and therein;T ao nut to preventjthe enigl inernier tating and thereby lgieoorning' lo the body portionof the pressure t is evident that the liquid ai allowed to flow tl roughthe 24 may drip slowly through o the openings Sol, as desired, ai by theposition of the valve mayY loe applied upon the an `the irireesurecylinder ll hy ol tonl 16 upon which occasion Extending: downwardlyportion ot toe has 1 S is an i 1n. which plurality olf o M vided.Eetaehahlu.7 Seeuied to th 1 4. .C 1l th .ouen ...he inooiuni oi a nlulas o forni to oever the face of a provided with slots through Screws 38project ther l ji' allou'ingeaid 39 to he rotated elipgh-ly. andopenings are aligning with the op 36 and the aniount A the hood 39 maybe .te-il u hood upon Said flange and in Vi i infgs 4l relatively to the@ein loy increasing or decreasing the actual opening into the hood.

upon the lume i.

fr Cup-Shaped screen 42. preferably rformed oit' .line inesh Wire. isloo-oiied in an inverted position Within the hood 39 :ind n. layer otitnhle alas` rhent material fl-S rovere the no per Surface of saidscreen. A nnounifll'ii' ouehion fiel is hehP agjziinnt the loxifei' odgeo lt tie hood 39. Seid Cushifin lining inovidiid With n. flap 415i'Whioh in Stietoheil :i round tho perinheiy oiL said hood nhoi'o :i hondlo located at the loive.` odpjo of nid hood. The Cushion fl-l; isprovided with a ruhe '27 througli which air iS blown into said('ueliion. alleiwhich Suid tulie eloeed through tl e inediuin of aiuitahle Clamp fl-8 Whirh pinches the 1 einen,

. nfliirli deeignnlie ho nunilinu I i* minute tlizit il' in deeiled lo'Food to nl: material. lllhen the anni thethn is i'ed lijf gi'avitjalone. the Horny now.u .'.le maj-7 or may not lie used :inv desired.

irertli through ihn diifehnf he :i Horb/nt material 11",.

noA `nfl drip through one oi' more ol' l heine' determined if lli@position of liu volw Ydill-en :i Sii. in ed. lli@ pinion il? rod l? sindtowed opeuin o. the nuwfitl notario upon r i .I the ui ne? portion ofthe in'ene'ii'o njflindei the liouidoithin .Caid cylinder :ihovn widpieton will pase 'troni Suid Cylinder lln'ouoli the hleed onf-ni inf-othe nontninin'. The amount of en uch in admitted to the interior of thehood 9G in ro@ elated ln rotzit l, ino; Said hood upon, li e L l 'hebane 6 and thereby moving' the openings Alil. in the lill) llo hoodrelatively to the vopenings 37 in the nange 3G.

Upon occasions when itis desired to utiiize the apparatus to administergaseous anaesthetics or oxygen gas to patients, a conductor from thecontainer in which said anaesthetics or gas are contained is secured tothe nip-ple 49 tast in the hood 39 and the patient inhales these gasesin exactly the same manner as the vapor of the liquid anstheticspreviously mentioned.

I claim: y

1.. An apparatus for administering anecsthetics comprising, incombination, a hood, a container for an an'eesthetic mounted upon lsaidhood, a pressure cylinder for said anesthetic interposed between saidhood. and said container and Communicating with both and means to 'forcesaid aneesthetic from said pressure cylinder into said hood.

2. An apparatus for administering anaesthetics comprising, incombination, a hood, a container for an anaesthetic mount ed upon saidhood, a pressure cylinder for said anaesthetic interposed between saidhood and said container and communicating With both, means to force saidanaesthetic from said pressure cylinder into said hood and means toproduce a spray of said anzesthetic as it passes trom said pressurecylinder int'o said hood.

3. An apparatus for administering auaesthetics comprising, inCombination, a hood, a container for an anaesthetic mounted upon saidhood, a pressure cylinder for said anaesthetic interposed between saidhood and said container and communicating With both, means to torce saidanaesthetic 'from said pressure cylinder into said hood and means toregulate the amount ofs'aid anaesthetic passing to said hood.

An apparatus tor administering aneesthetics comprising, in combination,a hood, a Container for an 'anaesthetic mounted upon `said hood, apressure cylinder for said anaasthetic communicating With said containerand provided With a discharge port communicating with said hood, meansto force said anaesthetic'- from said pressure cylinder through saiddischargeport into 'said hood and means `to regulate the amount of saidanznsth'etic passing through said discharge port.

5., An apparatus for administering aintesthetics comprising, incombination, a hood, a container for an antestl-'ietic mounted upon saidhood, a pressure cylinder -or said ancsthetic located `Within saidcontainer, the interior of said cylinder communicating' With theinterior of said container, said cylinder also being provided With adischarge port communicating with said hood, means to force saidanaesthetic from said pressure cylinder through said dischargeaesthetics comprising,

port into said hood and means to regulate the amount of said anaestheticpassing through said discharge port.

6. An apparatus tor administering anaesthetics comprising, incombination, a hood, a container ior an anaesthetic mounted 'uponsaidhood, a pressure cylinder :tor said anaesthetic located Within saidcontainer, the interior of said cylinder communicating With the interiorof said container, said cylinder also being provided with a 'dischargeport communicating With said hood, means to force said anaesthetic fromsaid pressure cylinder' through said discharge port, means to produce aspray of said anzesthetic and means to regulate the amount of saidanzesthetic passing through said discharge port.

7. An apparatus for administering anaestlietics comprising, incombination, a hood, a container for an antesthetic mounted upon saidhood, a pressure cylinder for said anzesthetic located Within saidcontainer, the interior oi said cylinder communicating With the interiorof said container, said cylinder also being provided With a dischargeport communicating With said hood, means to torce said anaesthetic `fromsaid pressure cylinder through said discharge port, means to produce aspray of said anresthetic, means to regulate the amount ot saidamr-esthetic passing through said discharge port and means to indicatethe rate ot feed ot said anaesthetic.

8. An apparatus for administering anaesthctics comprising, incombination, a hood, a container tor an anaesthetic mounted upon saidhood, a pressure cylinder for said anzesthetic located Within saidcontainer, the interior ot said cylinder communicating With the interiorot said container, said cylinder also being provided uitha dischargeport connnunicating With said hood, a piston to torce said anzesthetictrom said pressure cylinder Hthrough said discharge port into said hoodand a valve to regulate the amount ot' said anaesthetic passing throughsaid discharge port.

9. An apparatus for administering anin. combination, a hond, a containertor an anassthetic mountN ed upon said hood, pressure cylinder for saidantesthetic located Within said container, the interior et said cylindervcommunicating with the interior of saidfcon: tainer, said cylinder alsobeing provided with a discharge port communicating With said hood, apiston to torce said anaesthetic Vtrein said iniessure cylinder throughsaid discharge port, a spray nozzle fast to said pressure cylinderbeneath said discharge port and a valve to regulate the amount of saidanaesthetic passing through said discharge port.

10. An apparatus for administering anaesthetics comprising, incombination, a hood, a container for an aneesthetic mounted upon saidhood, a pressure cylinder for said anaesthetic located within saidcontainer, the interior of said vcylinder communicating with theinterior ot said container, said cylinder also being provided with adischarge port comnnmicating with said hood, a piston to force saidansesthetic trom said pressure cylinder through said discharge port, aspray nozzle fast to said pressure cylinder beneath said discharge port,a valve to regulate the amount vof said anaesthetic passing through saiddischarge port and means to indicate the rate oit feed oi saidaneesthetic.

11. An apparatus for administering aneesthetics comprising, incombination, a hood, a container for an anaesthetic mounted upon saidhood, a pressure cylinder for said anaesthetic located within saidcontainer, the interior of said cylinder conmunicatingl with theinterior of said container, said cylinder also being provided with adischarge port communicating with said hood, a piston to force saidantesthetic from said pressure cylinder through said discharge port,means to return said piston to its normal position, a spray nozzle fastto said pressure cylinder beneath said discharge port, a valve for saiddischarge port, and means to indicate the rate et feed ot saidanaesthetic.

12. An apparatus 'for administeringT anaesthetics comprising, incombinationn a hood, a'container for an aiuestlietic mounted upon saidhood, a pressure cylinder ior said anaesthetic located within saidcontainer, the interior of said cylinder communicating with the interiorof said container, said cylinder also being provided with a dischargeport communicating with said hood, a piston within said cylinder, atubular piston rodeXtending upwardly through said container, ahandle forsaid piston rod, aspray nozzle tastto said pressure cylinder beneathsaid discharge port, a valve for said discharge port, a valve rodextending through said piston rod and a handle 'tast to said\,alve'rod.`

13. An apparatus ior administering anaesthetics comprising, incombination, a hood, a container Jfor an anzesthetic mounted upon saidhood, a pressure cylinder for said an- `esthetic located within saidcontainer, the

interior of said cylinder communicating with the interior of saidcontainer, said cylinder also being provided' with a discharge portcommunicating with said hood, a pis-- ton withinV said cylinder, atubular piston vrod extending upwardly through said container, a handleJfor said piston rod, said handle being provided with graduationsthereon, a spray nozzle fast to said pressure cylinder beneath saiddischarge port, u valve for said discharge port` a valve rod extendingthrough said piston rod, a handle `tust to said valve, rod and anindicator tasty to said valve rod and registering with said graduations.

14. An apparatus tor administering anzcsthetics comprising, incombination, a hood provided with openings therein. a container for ananaesthetic embodying therein a hase mounted to rotate upon. said hoodand provided with an annular flange havingr open ings therein normallvaligning' with the openings in said hood, a pressure cylinder for saidanaesthetic located within said oon-- tainer, the interior oi sa idcylinder commu-- nicating with the interior ot said container` saidcylinder also being provided with a disV charge port communicating withsaid hood. means to torce said anzesthetic from said pressure cylinderthrough said discharge port into said hood and means to regulate theamount of said anaesthetic passing through said discharge port.

l5` An apparatus for administering anzesthetics comprising, incombination, a hood provided with openings therein, a container for ananaesthetic embodying therein a, hase mounted to rotate upon said hoodand provided with an annular flange having openings therein normallyaligning with the openings in said hood, said container also embodyingtherein a transparent cylindrical member mounted upon said hase and acap; a pressure cylinder for said anresthetie located within saidcontainer, the interior o? said cylinder communicating with the interiorof said container, said cylinder being` provided with a tubularextension projecting upwardly through said container, means fast to saidtubular extension to clamp said base, cylindrical member and captogether. said cylinder also bein provided with a discharge portcommunicating with said hood, a piston within said cylinder, a tubularpiston rod extending upwardly through said tubular extension, a handlefor said piston rod, a spray nozzle tast to said pressure cyl-- inderbeneath said discharge port and :i valve for said discharge port.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

RUDGLPH E. T. RHA MES. Witnesses FRANKLIN E. Low, Hazen F. LA MUDsn.

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